625396818 has 32 divisors (see below), whose sum is σ = 1373875200. Its totient is φ = 188906256.

The previous prime is 625396817. The next prime is 625396819. The reversal of 625396818 is 818693526.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (625396817) and next prime (625396819).

It is a super-6 number, since 6×625396818⁶ (a number of 54 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625396817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116638 + ... + 121881.

It is an arithmetic number, because the mean of its divisors is an integer number (42933600).

Almost surely, 2^625396818 is an apocalyptic number.

625396818 is an abundant number, since it is smaller than the sum of its proper divisors (748478382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625396818 is a wasteful number, since it uses less digits than its factorization.

625396818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238566.

The product of its digits is 622080, while the sum is 48.

The square root of 625396818 is about 25007.9351006835. The cubic root of 625396818 is about 855.1688815197.

The spelling of 625396818 in words is "six hundred twenty-five million, three hundred ninety-six thousand, eight hundred eighteen".